diff mbox

[2/2] drm/radeon: reset dma engine on gpu reset

Message ID 1357165835-10223-2-git-send-email-j.glisse@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jerome Glisse Jan. 2, 2013, 10:30 p.m. UTC 
From: Jerome Glisse <jglisse@redhat.com>

This try to reset the dma engine when performing gpu reset. Hopefully
bringing back the gpu dma engine in sane state.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
---
 drivers/gpu/drm/radeon/evergreen.c  | 30 +++++++++++++++++++++---------
 drivers/gpu/drm/radeon/evergreend.h | 10 +++++++++-
 drivers/gpu/drm/radeon/ni.c         | 30 +++++++++++++++++++++---------
 drivers/gpu/drm/radeon/nid.h        |  2 +-
 drivers/gpu/drm/radeon/r600.c       | 28 ++++++++++++++++++++++------
 5 files changed, 74 insertions(+), 26 deletions(-)
diff mbox

Patch

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 6dc9ee7..f92f6bb 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2309,19 +2309,19 @@  bool evergreen_gpu_is_lockup(struct radeon_device *rdev, struct radeon_ring *rin
 static int evergreen_gpu_soft_reset(struct radeon_device *rdev)
 {
 	struct evergreen_mc_save save;
-	u32 grbm_reset = 0;
+	u32 grbm_reset = 0, tmp;
 
 	if (!(RREG32(GRBM_STATUS) & GUI_ACTIVE))
 		return 0;
 
 	dev_info(rdev->dev, "GPU softreset \n");
-	dev_info(rdev->dev, "  GRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS               = 0x%08X\n",
 		RREG32(GRBM_STATUS));
-	dev_info(rdev->dev, "  GRBM_STATUS_SE0=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS_SE0           = 0x%08X\n",
 		RREG32(GRBM_STATUS_SE0));
-	dev_info(rdev->dev, "  GRBM_STATUS_SE1=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS_SE1           = 0x%08X\n",
 		RREG32(GRBM_STATUS_SE1));
-	dev_info(rdev->dev, "  SRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  SRBM_STATUS               = 0x%08X\n",
 		RREG32(SRBM_STATUS));
 	dev_info(rdev->dev, "  R_008674_CP_STALLED_STAT1 = 0x%08X\n",
 		RREG32(CP_STALLED_STAT1));
@@ -2337,9 +2337,21 @@  static int evergreen_gpu_soft_reset(struct radeon_device *rdev)
 	if (evergreen_mc_wait_for_idle(rdev)) {
 		dev_warn(rdev->dev, "Wait for MC idle timedout !\n");
 	}
+
 	/* Disable CP parsing/prefetching */
 	WREG32(CP_ME_CNTL, CP_ME_HALT | CP_PFP_HALT);
 
+	/* Disable DMA */
+	tmp = RREG32(DMA_RB_CNTL);
+	tmp &= ~DMA_RB_ENABLE;
+	WREG32(DMA_RB_CNTL, tmp);
+
+	/* Reset dma */
+	WREG32(SRBM_SOFT_RESET, SOFT_RESET_DMA);
+	RREG32(SRBM_SOFT_RESET);
+	udelay(50);
+	WREG32(SRBM_SOFT_RESET, 0);
+
 	/* reset all the gfx blocks */
 	grbm_reset = (SOFT_RESET_CP |
 		      SOFT_RESET_CB |
@@ -2362,13 +2374,13 @@  static int evergreen_gpu_soft_reset(struct radeon_device *rdev)
 	(void)RREG32(GRBM_SOFT_RESET);
 	/* Wait a little for things to settle down */
 	udelay(50);
-	dev_info(rdev->dev, "  GRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS               = 0x%08X\n",
 		RREG32(GRBM_STATUS));
-	dev_info(rdev->dev, "  GRBM_STATUS_SE0=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS_SE0           = 0x%08X\n",
 		RREG32(GRBM_STATUS_SE0));
-	dev_info(rdev->dev, "  GRBM_STATUS_SE1=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS_SE1           = 0x%08X\n",
 		RREG32(GRBM_STATUS_SE1));
-	dev_info(rdev->dev, "  SRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  SRBM_STATUS               = 0x%08X\n",
 		RREG32(SRBM_STATUS));
 	dev_info(rdev->dev, "  R_008674_CP_STALLED_STAT1 = 0x%08X\n",
 		RREG32(CP_STALLED_STAT1));
diff --git a/drivers/gpu/drm/radeon/evergreend.h b/drivers/gpu/drm/radeon/evergreend.h
index f82f98a..5786a32 100644
--- a/drivers/gpu/drm/radeon/evergreend.h
+++ b/drivers/gpu/drm/radeon/evergreend.h
@@ -742,8 +742,9 @@ 
 #define		SOFT_RESET_ROM				(1 << 14)
 #define		SOFT_RESET_SEM				(1 << 15)
 #define		SOFT_RESET_VMC				(1 << 17)
+#define		SOFT_RESET_DMA				(1 << 20)
 #define		SOFT_RESET_TST				(1 << 21)
-#define		SOFT_RESET_REGBB		       	(1 << 22)
+#define		SOFT_RESET_REGBB			(1 << 22)
 #define		SOFT_RESET_ORB				(1 << 23)
 
 /* display watermarks */
@@ -2028,6 +2029,13 @@ 
 #define	CAYMAN_PACKET3_DEALLOC_STATE			0x14
 
 /* DMA regs common on r6xx/r7xx/evergreen/ni */
+#define DMA_RB_CNTL                                       0xd000
+#       define DMA_RB_ENABLE                              (1 << 0)
+#       define DMA_RB_SIZE(x)                             ((x) << 1) /* log2 */
+#       define DMA_RB_SWAP_ENABLE                         (1 << 9) /* 8IN32 */
+#       define DMA_RPTR_WRITEBACK_ENABLE                  (1 << 12)
+#       define DMA_RPTR_WRITEBACK_SWAP_ENABLE             (1 << 13)  /* 8IN32 */
+#       define DMA_RPTR_WRITEBACK_TIMER(x)                ((x) << 16) /* log2 */
 #define DMA_STATUS_REG                                    0xd034
 
 #endif
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 6dae387..e67d5f6 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1309,19 +1309,19 @@  void cayman_dma_fini(struct radeon_device *rdev)
 static int cayman_gpu_soft_reset(struct radeon_device *rdev)
 {
 	struct evergreen_mc_save save;
-	u32 grbm_reset = 0;
+	u32 grbm_reset = 0, tmp;
 
 	if (!(RREG32(GRBM_STATUS) & GUI_ACTIVE))
 		return 0;
 
 	dev_info(rdev->dev, "GPU softreset \n");
-	dev_info(rdev->dev, "  GRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS               = 0x%08X\n",
 		RREG32(GRBM_STATUS));
-	dev_info(rdev->dev, "  GRBM_STATUS_SE0=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS_SE0           = 0x%08X\n",
 		RREG32(GRBM_STATUS_SE0));
-	dev_info(rdev->dev, "  GRBM_STATUS_SE1=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS_SE1           = 0x%08X\n",
 		RREG32(GRBM_STATUS_SE1));
-	dev_info(rdev->dev, "  SRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  SRBM_STATUS               = 0x%08X\n",
 		RREG32(SRBM_STATUS));
 	dev_info(rdev->dev, "  R_008674_CP_STALLED_STAT1 = 0x%08X\n",
 		RREG32(CP_STALLED_STAT1));
@@ -1346,9 +1346,21 @@  static int cayman_gpu_soft_reset(struct radeon_device *rdev)
 	if (evergreen_mc_wait_for_idle(rdev)) {
 		dev_warn(rdev->dev, "Wait for MC idle timedout !\n");
 	}
+
 	/* Disable CP parsing/prefetching */
 	WREG32(CP_ME_CNTL, CP_ME_HALT | CP_PFP_HALT);
 
+	/* Disable DMA */
+	tmp = RREG32(DMA_RB_CNTL);
+	tmp &= ~DMA_RB_ENABLE;
+	WREG32(DMA_RB_CNTL, tmp);
+
+	/* Reset dma */
+	WREG32(SRBM_SOFT_RESET, SOFT_RESET_DMA);
+	RREG32(SRBM_SOFT_RESET);
+	udelay(50);
+	WREG32(SRBM_SOFT_RESET, 0);
+
 	/* reset all the gfx blocks */
 	grbm_reset = (SOFT_RESET_CP |
 		      SOFT_RESET_CB |
@@ -1373,13 +1385,13 @@  static int cayman_gpu_soft_reset(struct radeon_device *rdev)
 	/* Wait a little for things to settle down */
 	udelay(50);
 
-	dev_info(rdev->dev, "  GRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS               = 0x%08X\n",
 		RREG32(GRBM_STATUS));
-	dev_info(rdev->dev, "  GRBM_STATUS_SE0=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS_SE0           = 0x%08X\n",
 		RREG32(GRBM_STATUS_SE0));
-	dev_info(rdev->dev, "  GRBM_STATUS_SE1=0x%08X\n",
+	dev_info(rdev->dev, "  GRBM_STATUS_SE1           = 0x%08X\n",
 		RREG32(GRBM_STATUS_SE1));
-	dev_info(rdev->dev, "  SRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  SRBM_STATUS               = 0x%08X\n",
 		RREG32(SRBM_STATUS));
 	dev_info(rdev->dev, "  R_008674_CP_STALLED_STAT1 = 0x%08X\n",
 		RREG32(CP_STALLED_STAT1));
diff --git a/drivers/gpu/drm/radeon/nid.h b/drivers/gpu/drm/radeon/nid.h
index 22a62c6..48e5022 100644
--- a/drivers/gpu/drm/radeon/nid.h
+++ b/drivers/gpu/drm/radeon/nid.h
@@ -65,7 +65,7 @@ 
 #define		SOFT_RESET_VMC				(1 << 17)
 #define		SOFT_RESET_DMA				(1 << 20)
 #define		SOFT_RESET_TST				(1 << 21)
-#define		SOFT_RESET_REGBB		       	(1 << 22)
+#define		SOFT_RESET_REGBB			(1 << 22)
 #define		SOFT_RESET_ORB				(1 << 23)
 
 #define VM_CONTEXT0_REQUEST_RESPONSE			0x1470
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 4605551..95daff2 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1283,11 +1283,11 @@  static int r600_gpu_soft_reset(struct radeon_device *rdev)
 		return 0;
 
 	dev_info(rdev->dev, "GPU softreset \n");
-	dev_info(rdev->dev, "  R_008010_GRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  R_008010_GRBM_STATUS      = 0x%08X\n",
 		RREG32(R_008010_GRBM_STATUS));
-	dev_info(rdev->dev, "  R_008014_GRBM_STATUS2=0x%08X\n",
+	dev_info(rdev->dev, "  R_008014_GRBM_STATUS2     = 0x%08X\n",
 		RREG32(R_008014_GRBM_STATUS2));
-	dev_info(rdev->dev, "  R_000E50_SRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  R_000E50_SRBM_STATUS      = 0x%08X\n",
 		RREG32(R_000E50_SRBM_STATUS));
 	dev_info(rdev->dev, "  R_008674_CP_STALLED_STAT1 = 0x%08X\n",
 		RREG32(CP_STALLED_STAT1));
@@ -1303,8 +1303,24 @@  static int r600_gpu_soft_reset(struct radeon_device *rdev)
 	if (r600_mc_wait_for_idle(rdev)) {
 		dev_warn(rdev->dev, "Wait for MC idle timedout !\n");
 	}
+
 	/* Disable CP parsing/prefetching */
 	WREG32(R_0086D8_CP_ME_CNTL, S_0086D8_CP_ME_HALT(1));
+
+	/* Disable DMA */
+	tmp = RREG32(DMA_RB_CNTL);
+	tmp &= ~DMA_RB_ENABLE;
+	WREG32(DMA_RB_CNTL, tmp);
+
+	/* Reset dma */
+	if (rdev->family >= CHIP_RV770)
+		WREG32(SRBM_SOFT_RESET, RV770_SOFT_RESET_DMA);
+	else
+		WREG32(SRBM_SOFT_RESET, SOFT_RESET_DMA);
+	RREG32(SRBM_SOFT_RESET);
+	udelay(50);
+	WREG32(SRBM_SOFT_RESET, 0);
+
 	/* Check if any of the rendering block is busy and reset it */
 	if ((RREG32(R_008010_GRBM_STATUS) & grbm_busy_mask) ||
 	    (RREG32(R_008014_GRBM_STATUS2) & grbm2_busy_mask)) {
@@ -1336,11 +1352,11 @@  static int r600_gpu_soft_reset(struct radeon_device *rdev)
 	WREG32(R_008020_GRBM_SOFT_RESET, 0);
 	/* Wait a little for things to settle down */
 	mdelay(1);
-	dev_info(rdev->dev, "  R_008010_GRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  R_008010_GRBM_STATUS      = 0x%08X\n",
 		RREG32(R_008010_GRBM_STATUS));
-	dev_info(rdev->dev, "  R_008014_GRBM_STATUS2=0x%08X\n",
+	dev_info(rdev->dev, "  R_008014_GRBM_STATUS2     = 0x%08X\n",
 		RREG32(R_008014_GRBM_STATUS2));
-	dev_info(rdev->dev, "  R_000E50_SRBM_STATUS=0x%08X\n",
+	dev_info(rdev->dev, "  R_000E50_SRBM_STATUS      = 0x%08X\n",
 		RREG32(R_000E50_SRBM_STATUS));
 	dev_info(rdev->dev, "  R_008674_CP_STALLED_STAT1 = 0x%08X\n",
 		RREG32(CP_STALLED_STAT1));